[1] Qt Linguist Manual: Translators | Documentation | Qt Project ( 版) <http://qt-project.org/doc/qt-4.8/linguist-translators.html>
.qph Qt phrase book files
are human-readable XML files containing standard phrases and their translations. These files are created and updated by Qt Linguist and may be used by any number of projects and applications.
[2] Qt Phrase Book (.qph) — Translate Toolkit 1.13.0-rc1 documentation ( 版) <http://translate-toolkit.readthedocs.org/en/latest/formats/qt_phrase_book.html>